Cars

I had an appointment at the dentist. I have to go back on Friday, but that's another story

On my way home we discovered two special cars.
The main car is a Citroën DS 21 from 1970 (according to the license plate)

The other is a BMW and I have no idea which one. I couldn't find the meaning of "STNBRB Cars". Both are special. Which one do you like more?